Fluid-operated jack



April 13 ,1926.

' 1580,318 A, F NoRDENsKJoLD y FLUID OPEHATED JACK Filed Sept. 2, 1924 2Sheets-Sheet l April 13 1926. 1,580,318

A. F. NORDENSKJOLD FLUID OPERATED JACK Filed sept. 2, 1924l 2sheets-sneu 2 iNvENToR Patented Apr. v12?, 1926.

` UNITED STATES ANTON F. NORDENSKJOLD, OF PITTSBURGH, PENNSYLVANIA,ASSIGNOB TO UNITED- PAr-f'ENr OFFICE.

FOUNDRY MACHINE COMPANY, F MGDONALD, P ENNSYI'VAN-IA.

i 'FLUID-cremeren Jacx.

Application Med -Septexxxber 2, 1824. lSerial. No. 735,278.

To au whom it .mayooacern: f

Be it known that I, ANTON F. NORDEN- l SKJOLD, a citizen ofthe UnitedStates, vresiding at Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inFluid-Operated Jacks, of which the Afollowing is a specification.

invention relates to fluid operated jacks, and while primarily intendedfor use in connection with motor vehicles, it is obvious that the devicemay be employed for any purposes wherein itis found to be applicable.

Important objects of the invention are to provide a fluid operatedvlifting apparatus for motor vehicles, which is permanently secured toand carried by-the'motor vehicle; which is power operated and valvecontrolled to elevate either the .entire vehicle, or any end, side orwheel thereof; which is l -so disposed on the motor vehicle as to be outof the Way normally and to be brought into service when required,without diliculty;'

which includes an automatically regulated fluid distributing mechanismypermitting `of the continued operation of the latter after theelevating members have reached their a manner as maximum extension,without liability of ldamage to any parts of the structure; and

which may be conveniently suited for installation to any type of lmotorvehicle Without requiring any additional materlals exceptthatincorporated in the invention.

Further objects of the invention are to provide a device of thecharacter stated, in hereinafter set forth which will facilitate andexpedite the elevating operation which may be operated from the driversseat; which is simple in its construction and arrangement, strong,durable and eiclent 1n its use, compact, attractive 1n appearance andcomparatively inexpensive to manufacture, install and operate.4

With the foregoing and other objects in.

view which will appear as the description proceeds, the inventionresides in the combination and arrangement of parts and in the detailsofconstruction hereinafter described andclaimed, it being understood:that changes in the'precise embodiment of the invention hereinafterdisclosed can be made within the scope of what is claimed Withoutdeparting from. the spirit ofthe invention. l

In the drawing forming a portion of this specification and wherein likenumerals of reference designate corresponding parts throughout theseveral viewsz- Figure 1` is `a top plan view of a lifting apparatus formotor vehicles lin accordance with my invention.

Figure 2 is a sectional view of the control valve showing the relativeositions of the parts -thereof during the owering opera tion. v

carried by the front axle 5, of 'the motorA and are disposed adjacent torevehicle, spective vehicle 'wheels A and B. The elevating mechanisms 3and 4 are carried by the rear axle 6, of the motor vehicle and aredisposed adjacent to res ective vehicle wheelsC and D. Each o theelevating mechanisms 1, 2, 3 and 4 is rigidly secured to respectivevehicle 'axles 5- and 6 by a clamplng element 7, as clearly shown inFigure 4, of the drawing orin any other suitable manner. f

The elevating mechanisms 1, 2, 3 ahd 4A are identical in constructionand each includes 4 is a side View of the elevating a cylinder 8 andacylinder 9 the former extending longitudinally forward of the axle onwhich it is mounted. and the latter extending longitudinally rearwardtherefrom. The cylinder 8 is provided with ,an associated longitudinallyaligned guide member 10 disposed rearwardly of the vehicle axle ou whichit is niounted, and the cylinder-9 is provided with an associated lonitudinally aligned guide member 11 dispose forWard-- ly of the vehicleaxle. In otherwords, the

guidemember 11 extends parallel with and. is disposed along the outerside of the cylinder 8, while the guide member extends. parallel withand is disposed along the inner,

` side of the cylinder 9.

The cylinders 8 and 9 andthe associated guidemembers 10 and 11 arepreferably constructed as integral casting, and the bores 412 of thevformer are separated from the guideways 13 of the latter by thetransverselyldisposed partitions 14. The adjacent 'Vends of the bores 12of a Apair of cylinders 8 and 9 are provided with anintercommunif.

. eating port l2 for the purpose to be described The other end ot' eachof the cylinders 8 and 9 is closed by a cap 10 formed with acentrallydisposed threaded aperture 11. Each of the partitions 14 is 'formed witha centrally disposed aperture 15 and With a stui'ling box 16, the latterbe ing formed in theside of the that faces the' guideways 13.

A plunger 17 is mounted in thef bore -12 of each ot' the cylinders 8 and9 and is con# nected to one end of a, plunger rod 18 which" extendsslidably through the aperture 15 of" rthe partition '14. The other vlend ofthe plunger rod 18 is connected tothe" guide?- block 19 whichlatter isshi'ftably. mounted? in the guideway 130i each ofthe guide.Vmembers 10 and 11. The guideways 13 are.,-

rectangular in vtransverse Vcross sectlonand the guide blocks 19shiftably mounted there-Q inl are 'likewise rectangular y transverselcross section for the purpose lof preventing the rotation of the latterin the guideways the plunger rod 18in the partition aperture 15.4 Theleg 21 extends through an opening 23 'in the guide member 10, 11 and isadjusted by 'means of the bolt 24 which extends therethrouvh andthreadably engages in 'the lateralrly f shownin i disposed boss 25, asclearly gure 5, of the drawing. 'Each-of thev guidemembers 10 and 11 is'provided with a longitudinally extending slot 26,'which is formed onthe lower wall thereof adjacent to the cylinder 8, 9 'along f the sideof which it is disposed, so that the slot 26 of one guide member will be4longitudinallyaligned, as nearly as possible withthe slot 26V-of theother guide member;-

partition 14 carried by .casing 35 is is similarly connected to theguide block 19 ymounted 1n the guide member 10. vThe lower ends of thetogglebars 27 and 28 are pivotally connected to the foot 30 by a com-1mon pivot pini-I1. As the upper ends of the bars 27 and 28 are pivotallyconnectedto respective guide blocks 19in opposed guide Av members 10 and11, the movement of the i' guide blocks 19 toward each other will actf vto distend the bars 27 and 28 whereby they Will exert an endwisepressure Whichin creases as thev bars approach a vertical o sition,While the movement of the gulde4 vblocks '19 in a direction away tfno-meach other will lact to collapse the bars 27 -and f 2 8-against lthemotorvehicle frame structure. 4 v f An operating fluid reservoir 32 istixedly supported in any suitable manner to the .frame structure of themotor lvehicle, and 'a fluid pressure .pump 33 is` likewise fixed to thelatter in any suitable mannerand position to tor vehic vfluid 33. ,-A'our way valve ferabl .located to'permit of its'manipulation 39 and 40and the valve 36 is provided with elementi, consisting'A .of the. valvecasingxandthe valve 36, is

thejmotor'vehicle and-.is pre- Y permit of. the .operation ofthe mo eengine to. drive and operate the:

rom-the operators seat." The valve]l provided Ywith four ports. 37, 38,llooj a pair of-communicatingportstl and 42 and with a ipair ofVcommunicating'ports 43 ing port 37 withthe fluid reservoir 32.*' Anuidv Supply pipe 45 connects the lt 33 withlthe valve casingport 39, and'I' intake pipe 47-connect`s the reservoirr32 with i the pump 33.' vAreliefvalve 48 for the purpose hereinafter stated, is mounted in the' suply pipe 45 and is connected to the inta e pipe 47 by the relief pipe49. v f

Ports 12 of elevating mechanism 1 and`3y are connected by the commonelevating con'- duit 5'0 and the ports 12 of the elevating mechanisms 2and 4' are connected by a simi- A common lower lar elevating conduit51.- ing conduit 52 is connected as indicatedat 53, in each of theapertures 11l of the cylinf ders 8 and.9 ofthe elevating' and in each ofthe apertures 11 of the cylinders 8 and 9 of the elevatingV mechanism'3.A similar lowering conduit 54is connected as indicated at 55,in eachofthe apertures 11 of the cylinders Sand 9 o f the elevating mechanism 2and in each of the apertures 11 of the cylinders 8 and 9 of theelevating v Each of the. elevating mechanisms 1, 2, 3-v

:and 4 further includes a pair of toggle bars 27,1'` 28. The Aupper endof the bar 27 ex v"tends through the slot 26.-,and pivotally` mechanism4.

The elevating conduits 50 and .51 communicate with each other throughthe cross connection- 55 which latter connects with the mechanism 1,' i

itsv v,5 2 and 5ftcommunicate other through .ther cross c :cgnnee-v witheach i connection: 5.6V v'coin-jf' I ymur'licatea `with the elevatingconduit 50.at"a' communicates with the velevating conduit int.lintermediate ofi-af pair' ofcontrol i 'I valves 60 and 61- mountedfinthe conduit 50,-A L 1,0..

and the other -end of the cross connection at a-pointintermediate of apair of `controli valves 62 and 63 mounted in the Acondu1t'51. 33 afterthe' elevating orlowering operation Une end o f the crossiconnection 58communif- `cates withthe'lowering conduit 52 at a pointj intermediateof. a .pair of Con'tactvalvesI and 5mounted'in the conduit 52, and the"valves 66 and 67 .mounted in the conduit, f In practice theo asfollovvs-z--l/.ssuming the inoperative position and it is-desired tomunicates with the lowering' conduit 54 at other end ofthe-crossconnection 58 .com-

point intermediate of. a Vpair of control eration of Vthedevi'ee is thatthe device' 1s -in operate. allwof the elevating mechanisms 1',

2, 3, and 4 to elevate the entire vehicle, all

of thecontrol valves 60, 61, 62, 63,64, 65, 66.l and '67 are-opened, andthe valve element- 34l 'isregulated to bring the valve ports 41, 42,A.43, and 44 into registration with respective valve *ca-singl ports38,39, 40 and 37, as Q clearly `shown in Figure 3 of thev drawing.

The pump 33 is now operated by its connection vvith the operating. motorvehicle was forced into the cylindersS and 9 to acengine or by any othersuitable driving -v medium. The operating-pump 33 will funcd from thetion to draw the operating flui and reservoir 32 through the intake pipe47,

will force the lluid through the' supply pipe 45, through the valveports 39, 42, 41 and 38 into the pipe 57 ,through the cross connec-y ltion v56, through the control valves 61, 61,

62 and 63 into the'elevating conduits 50 and.' 51, and'through the ports1.2 which establish communication between the bores-11, of the cylindersv8 and 9, of.`respective elevating mechanismsl, 2, 3'and 4. I v When theapparatus is inthe inoperative position all of the plungers 17 thereofare 'positioned against respective partitions 14 at adjacent ends of thepair of cylinders 8 and bores 12 through the port 12 9, as shown inFigure 5, of the drawing. lVhen the operating fluid enters the cylinderit will act against the plungers 17 ,thereby forcing the plunger 17,mounted in the cylinder 8, out- If for 4any reason' the operation.olth-e,

reached.,1th e a v relief* valve 48 will function to .l

a-1low*the passage" offthe operating fluid through therelief ipe V49back into the intake pipe, 47. lBytliis arrangement no damag'efwillresult to the mechnism of the de .vice by the continued operation of thepump is completed.

;. .After che initial elevating@ lowering.

operation the bores 512 of-lallof the cylinders ferma-9 win betompietayallai with are operating fluid at all times, and to lower the 'l vehicleafter *the elevating operation -as stated, the valve 34 is regulated tobring the valve ports 41, 42, 43 and 44 into registration withrespective valve casing ports 37, 38, 39, f 'A and 40, :as shown inFigure 2,. ofthe draW- ing. force ythefluid through the loweringconduits 52 and 54, and into all .of the cylinders 8 and 9 through the'cap apertures 11 in which the various ends of the conduits 52 and 54connect, as indicated at 53, and 55, respectively.

As the fluid is forced into the cylinders 87 The operation of the-pump33 will then l and 9, during the loweringy vo ration` Athrough the capapertures 11 the fluid which elevating conduits 50 and 51, through thevalve element ports 38, 42, 41'and 37 ,into the return pipe 46jandemptyl into the fluid supply reservior' 32.

. During the lowering operation, the plungers 17 of each air ofcylinders 8 and v9, will shift toward) each other thereby collapsingtoggle bars 27 and 28 against the frame 'structure of the motor vehicleand elevating the foot 30 carried thereby to the inoperative position asshown in Figure' 4, of the drawing. y

During the elevating operation the supply luid would ,empty from thecylinders 8` and-9 in the reverse directionv to that describedrelatively to the lowering operation, and would be returned to thesupply reservoir 32 through the lower conduits 52 and54. i

If the control valves 61 `and 65 are open and all other control valvesare closed the operation of the device will elevate the veluclewheel Aonly. In like manner, if only control valves 60 and 64 are open Wheel C1 if only control valves 63 be regulated to elevate any of the vehicleAthat the device shown in the drawings is merely illustrative', and thatvarious changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the principle ofthe invention, or sacrificing any of the advantages of.

the invention, which come within the scope of the claims hereuntoappended.

What I claim is:

1. In a devicel of the .character described, afiuid operated elevatingmechanism coinlprising a pair of horizontally disposed cylinders, aguide member associated witheach of said cylinders and extendinglongitudinally therewith, a plunger slidabl mounted in cach ofsaidcylinders, a ide lock slidably mountedin each of sai guide members, aplunger rod connecting said plunger with said guide block, a toggle barpivotally connected with each of said guide blocks, and a foot pivotallyconnected to the lower ends of said toggle bars, substantially asdescribed and for the purpose set forth. 'Y

2. In a device of the character described, a fluid operated elevatingmechanism comprising a pair-of horizontally disposed cylinders extendingin opposite directions relatively to Veach other, a guide memberrectangular in transverse cross section associated with each of saldcylinders and longilthe purpose'set forth.

tudinally aligned therewith,the lower wall of each of said side membersformed with a longitudinally extending slot disposed adjacent to theinner side wall of said slot, a plunger slidablyA mounted in each ofsaid cylinders, a guide block slidably mounted in each of said guidemembers, plunger rods I connecting said plungers. with associated guideblocks, a toggle barpivotally connected to each of said guide blocks andextending through slots, and a foot pivotally carried at the lower endof said toggle bars, substantial-1y as described and for the purpose setforth.

` 3. In a device of the character described,

the combination with a motor vehicle, a fluid operated elevatingmechanism attached to the axles of said motor vehicle .adjacent to eachwheel of the latter, each of said mechanisms including a pair of togglebars carrying a foot, and power operated means for selectively operatingsaid elevating mechanisms for distending and collapsing said t-ogf glebars, substantially as described and for the purpose set forth.

4. In a device of the character described, l l

the combination with a motor vehicle, 'a Huid operated elevatingmechanism attached to the axles of said motor vehicle adjacent to eachwheel of the latter, each of said mechanisms including a pair of togglebars carrying a foot, power operated means for selectively operatingsaid elevating mechanisms for distending and collapsing said togglebars, and means for automatically vcontrolling the operation of saidpower operated c means, substantially as described and for In testimonywhereof I aiiix signature.

ANTON F. NoRDENsKJoLD.

